[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.16"]
[Round "8"]
[White "Alvarez, Alfonso"]
[Black "Lopez Morales, Ruben Alfonso"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1845"]
[BlackElo "1576"]
[PlyCount "29"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. e4 e5 5. d3 Be7 6. Be2 0-0 7. 0-0 h6 8. a3 Nh7 9. Nd5 f5 10. Nxe7+ Qxe7 11. exf5 Rxf5 12. h3 d6 13. Nh2 Rf8 14. Bg4 Bxg4 15. Nxg4 1-0

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.16"]
[Round "9"]
[White "Martinez Serna, Miguel Angel"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1645"]
[BlackElo "1845"]
[PlyCount "21"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. d4 b6 2. c4 Bb7 3. Nc3 d6 4. e4 Nd7 5. Nf3 Ngf6 6. Bd3 e5 7. 0-0 Be7 8. Re1 exd4 9. Nxd4 Ne5 10. Bb1 Nxc4 11. Qa4+ 1-0

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.15"]
[Round "6"]
[White "Alvarez, Alfonso"]
[Black "Acevedo Hernandez, Fausto"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "1845"]
[BlackElo "1547"]
[PlyCount "37"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. a4 Nf6 2. b3 c5 3. c3 d5 4. Bb2 Nc6 5. Nf3 e5 6. h3 Be7 7. e3 e4 8. Nh2 Qc7 9. Be2 a5 10. Ba3 0-0 11. d3 d4 12. c4 exd3 13. Bxd3 Bd6 14. Nf3 Qe7 15. Bc1 Be5 16. Nxe5 Qxe5 17. Ra2 h6 18. 0-0 Qh5 19. Qxh5 1/2-1/2

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.15"]
[Round "7"]
[White "Arias Atehortua, Juan Esteban"]
[Black "Alvarez, Alfonso"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1581"]
[BlackElo "1845"]
[PlyCount "11"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nd7 5. Bc4 Nb6 6. Bb3 1/2-1/2

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.14"]
[Round "5"]
[White "Sanchez Navarrete, Sonia Ximena"]
[Black "Alvarez, Alfonso"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1626"]
[BlackElo "1845"]
[PlyCount "38"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 Bd7 5. f3 a6 6. Qd2 e6 7. Nge2 h5 8. h4 Nc6 9. 0-0-0 Na7 10. g3 b5 11. Nf4 Ne7 12. Be2 b4 13. Nb1 a5 14. g4 hxg4 15. fxg4 Bc6 16. d5 exd5 17. exd5 Bd7 18. Bd4 0-0 19. Bxg7 Kxg7 1/2-1/2

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.13"]
[Round "3"]
[White "Alvarez, Alfonso"]
[Black "Garcia Lopez, Juan Gilberto"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "1845"]
[BlackElo "1533"]
[PlyCount "76"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 d5 3. e3 Nf6 4. d4 Bf5 5. Qb3 Qb6 6. Qxb6 axb6 7. cxd5 Nxd5 8. Nxd5 cxd5 9. Ne2 Nc6 10. Bd2 e6 11. a3 Nb4 12. Bxb4 Bxb4+ 13. Nc3 Bxc3+ 14. bxc3 0-0 15. Kd2 Ra5 16. a4 f6 17. Bb5 e5 18. Rhc1 Rc8 19. h3 Rc7 20. f3 Ra8 21. g4 Bd7 22. Bxd7 Rxd7 23. Rcb1 Rd6 24. Rb4 Kf8 25. Kd3 Ke7 26. e4 dxe4+ 27. fxe4 exd4 28. cxd4 Rc8 29. d5 Kd7 30. Rab1 Kc7 31. Rc1+ Kb8 32. Rxc8+ Kxc8 33. Kd4 Kc7 34. Rb3 Rd8 35. e5 fxe5+ 36. Kxe5 Re8+ 37. Kd4 Rf8 38. Ke5 Re8+ 1/2-1/2

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.13"]
[Round "2"]
[White "Payares Diaz, Alejandro"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1296"]
[BlackElo "1845"]
[PlyCount "24"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 c6 4. 0-0 Nf6 5. c3 d6 6. d3 Bg4 7. h3 Bd7 8. Nbd2 Qc8 9. Kh2 Na6 10. Re1 e5 11. Nc4 Qc7 12. d4 exd4 0-1

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.12"]
[Round "1"]
[White "Alvarez, Alfonso"]
[Black "Gonzalez Gonzalez, Guillermo David"]
[Result "1/2-1/2"]
[ECO "A22"]
[WhiteElo "1845"]
[BlackElo "1339"]
[PlyCount "44"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. d3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nf3 Nc6 7. Be3 Be7 8. Be2 Be6 9. 0-0 0-0 10. Qc1 f6 11. Rd1 Nd4 12. Bxd4 exd4 13. Nb1 Bd6 14. Nbd2 c5 15. b3 Re8 16. Re1 Rc8 17. Rb1 Qd7 18. Qd1 a5 19. a4 f5 20. Ng5 Rf8 21. Nxe6 Qxe6 22. Bf3 Qe5 1/2-1/2

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.06"]
[Round "6"]
[White "Alvarez, Alfonso"]
[Black "Malagon Guzman, Juan Daniel"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1924"]
[BlackElo "1559"]
[PlyCount "72"]
[EventDate "2023.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 d6 6. h3 Be6 7. Bb3 Qd7 8. Ne2 0-0-0 9. c4 h6 10. Nc3 g5 11. Nd5 Nh5 12. Nh2 Nf4 13. Bxf4 gxf4 14. Ng4 f5 15. Ngf6 Qg7 16. Rg1 fxe4 17. Nxe4 Bxd5 18. cxd5 Bb4+ 19. Kf1 Nd4 20. Qg4+ Qxg4 21. hxg4 f3 22. gxf3 Nxf3 23. Rg3 Rdf8 24. Bd1 Nd4 25. a3 Ba5 26. Rc1 Kd7 27. b4 Bb6 28. a4 a6 29. Rb1 c6 30. a5 cxd5 31. axb6 dxe4 32. dxe4 Kc6 33. Rc3+ Kxb6 34. Rbc1 Rf7 35. Rc8 Rhf8 36. Rxf8 Rxf8 0-1

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.05"]
[Round "5"]
[White "Alvarez, Alfonso"]
[Black "Torres Puentes, Camila"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1924"]
[BlackElo "1439"]
[PlyCount "11"]
[EventDate "2023.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 e5 3. Nc3 Nf6 4. Bh3 Bxh3 5. Nxh3 d4 6. 0-0 1-0

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.04"]
[Round "2"]
[White "Alvarez, Alfonso"]
[Black "Osorio Ruiz, Juan Carlos"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1924"]
[BlackElo "1607"]
[PlyCount "46"]
[EventDate "2023.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 d6 4. Bc4 e6 5. d3 Nf6 6. 0-0 Be7 7. Bb5 Bd7 8. Bxc6 Bxc6 9. Re1 h6 10. a3 Qc7 11. d4 cxd4 12. Nxd4 0-0 13. Nxc6 Qxc6 14. Qd3 Rfd8 15. Qg3 Kh7 16. Qd3 Kh8 17. h3 Rac8 18. g4 d5 19. e5 Ne4 20. Nxe4 dxe4 21. Qxe4 Qxe4 22. Rxe4 Rd1+ 23. Kg2 Rxc2 0-1

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.04"]
[Round "3"]
[White "Suaza Builes, Oscar A"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1421"]
[BlackElo "1924"]
[PlyCount "32"]
[EventDate "2023.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 g6 2. Bf4 Bg7 3. Nc3 d6 4. e4 c6 5. Qd2 Nd7 6. Nf3 Nb6 7. h4 h5 8. Be2 Nf6 9. e5 Ng4 10. exd6 exd6 11. Ne4 0-0 12. Nxd6 Qe7 13. Nxc8 Raxc8 14. 0-0 Nd5 15. Bg3 Rcd8 16. c3 c5 1-0

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2019.06.24"]
[Round "7"]
[White "Alvarez, Alfonso"]
[Black "Espinosa Avila, Jose David"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "1953"]
[BlackElo "1419"]
[PlyCount "49"]
[EventDate "2019.06.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 Bg7 4. d4 d6 5. Nf3 0-0 6. h3 e5 7. d5 Ne8 8. Bd3 f5 9. Bg5 Bf6 10. h4 h6 11. Bxh6 Rf7 12. Ng5 Bxg5 13. Bxg5 Nf6 14. Qc2 f4 15. Nb1 a6 16. Nd2 Nbd7 17. Nf3 Qe8 18. a3 Nh5 19. 0-0-0 Ndf6 20. c5 a5 21. c6 b5 22. Bxb5 Rb8 23. Bd3 Qd8 24. Ng1 Bg4 25. Be2 1-0

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2019.06.24"]
[Round "6"]
[White "Echeverry, Jose Miguel"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1811"]
[BlackElo "1953"]
[PlyCount "53"]
[EventDate "2019.06.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. Nc3 c6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Nd7 7. Nf3 Qc7 8. Be2 g6 9. 0-0 Bg7 10. Rb1 0-0 11. c4 c5 12. d5 Ne5 13. Nd2 h5 14. h3 f5 15. f4 Nf7 16. e5 b6 17. Nf3 Kh7 18. e6 Nd6 19. Bb2 Bf6 20. Ne5 Qd8 21. Bxh5 Bxe5 22. Bxe5 Nxc4 23. Bxg6+ Kxg6 24. Rb3 Nxe5 25. fxe5 Bxe6 26. Rg3+ Kh6 27. Rf4 1-0

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2019.06.23"]
[Round "4"]
[White "Morales Ocampo, Yeni"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1417"]
[BlackElo "1953"]
[PlyCount "34"]
[EventDate "2019.06.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 g6 2. Bc4 Bg7 3. Nc3 d6 4. Nf3 Nf6 5. Qe2 b6 6. h3 Bb7 7. d4 0-0 8. b3 c5 9. a3 cxd4 10. Nd5 Bxd5 11. Bxd5 Nxd5 12. exd5 d3 13. cxd3 Bxa1 14. 0-0 Na6 15. Bh6 Bg7 16. Bxg7 Kxg7 17. Nd4 f6 0-1

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2019.06.22"]
[Round "3"]
[White "Alvarez, Alfonso"]
[Black "Castano Herrera, Saray"]
[Result "0-1"]
[ECO "E93"]
[WhiteElo "1953"]
[BlackElo "1510"]
[PlyCount "52"]
[EventDate "2019.06.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Nbd7 7. h3 e5 8. d5 Nc5 9. Qc2 a5 10. Be3 Nfd7 11. 0-0 f5 12. exf5 gxf5 13. Ng5 b6 14. g4 h6 15. Ne6 Nxe6 16. dxe6 Nc5 17. gxf5 Bb7 18. Nd5 Bxd5 19. cxd5 Qf6 20. Bh5 Qh4 21. Bf7+ Rxf7 22. exf7+ Kxf7 23. Kh2 e4 24. Rh1 Rg8 25. f4 exf3 26. f6 Bxf6 0-1

[Event "Ocana op 1st"]
[Site "Ocana"]
[Date "2015.09.27"]
[Round "6"]
[White "Duran, Diego Alexander"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "1300"]
[BlackElo "1955"]
[PlyCount "35"]
[EventDate "2015.09.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. e3 b6 4. Nge2 Bb7 5. d4 Nf6 6. Ng3 c6 7. b3 e6 8. Bd3 d6 9. 0-0 0-0 10. Qd2 Qe7 11. Re1 Qd8 12. Ba3 Qd7 13. Rad1 Re8 14. Nce4 Nxe4 15. Nxe4 c5 16. dxc5 dxc5 17. Nxc5 bxc5 18. Bxc5 0-1

[Event "Ocana op 1st"]
[Site "Ocana"]
[Date "2015.09.27"]
[Round "7"]
[White "Navas, Gildardo"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1508"]
[BlackElo "1955"]
[PlyCount "34"]
[EventDate "2015.09.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. c3 b6 4. d4 Bb7 5. Bd3 d6 6. 0-0 Nd7 7. Bf4 e6 8. Re1 Ne7 9. Nbd2 Nf6 10. Rc1 0-0 11. e5 dxe5 12. Bxe5 Nc6 13. Ne4 Nxe5 14. Nxe5 Nxe4 15. Bxe4 Bxe4 16. Rxe4 Qd5 17. Qc2 Qxa2 0-1

[Event "Ocana op 1st"]
[Site "Ocana"]
[Date "2015.09.26"]
[Round "5"]
[White "Alvarez, Alfonso"]
[Black "Jaimes, Fredy Alexander"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "1955"]
[BlackElo "1816"]
[PlyCount "75"]
[EventDate "2015.09.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d6 3. e4 c5 4. d3 Nc6 5. Nf3 g6 6. Be2 Bg7 7. 0-0 0-0 8. Bd2 a6 9. Qc1 Rb8 10. Bh6 b5 11. Bxg7 Kxg7 12. b3 bxc4 13. dxc4 Bg4 14. h3 Bxf3 15. Bxf3 Nd4 16. Bd1 Qd7 17. Re1 e5 18. Re3 h5 19. Rg3 h4 20. Rd3 Ne6 21. Qd2 Rbd8 22. Qe3 Nf4 23. Rd2 g5 24. Ne2 Qb7 25. Bc2 N6h5 26. Rad1 Qe7 27. Qc3 Qe6 28. Qf3 Rg8 29. Nxf4 Nxf4 30. Qg4 Kf6 31. Kh2 Qxg4 32. hxg4 Ke7 33. Bd3 Ne6 34. Rh1 Nd4 35. Rdd1 Rh8 36. Kg1 f6 37. Rh3 a5 38. Kf1 1/2-1/2

[Event "Ocana op 1st"]
[Site "Ocana"]
[Date "2015.09.26"]
[Round "4"]
[White "Duarte Rangel, Cristian Julian"]
[Black "Alvarez, Alfonso"]
[Result "1/2-1/2"]
[ECO "A42"]
[BlackElo "1955"]
[PlyCount "54"]
[EventDate "2015.09.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 c6 4. e4 d6 5. Nf3 e6 6. Be2 Ne7 7. 0-0 0-0 8. Bf4 Na6 9. Qb3 Nc7 10. Rfd1 Ne8 11. a4 Kh8 12. Qc2 a6 13. h3 Ng8 14. b4 h6 15. c5 d5 16. e5 Ne7 17. b5 axb5 18. axb5 Rxa1 19. Rxa1 cxb5 20. Nxb5 Nc6 21. Qa4 f6 22. Na7 Ne7 23. Nxc8 Qxc8 24. Qa8 Qxa8 25. Rxa8 Nc6 26. exf6 Nxf6 27. Rxf8+ Bxf8 1/2-1/2

[Event "Ocana op 1st"]
[Site "Ocana"]
[Date "2015.09.26"]
[Round "3"]
[White "Jaimes Contreras, Renzon Alexis"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1567"]
[BlackElo "1955"]
[PlyCount "26"]
[EventDate "2015.09.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nc6 3. e3 e6 4. Nc3 Qf6 5. a3 g6 6. Bd3 Bd6 7. 0-0 Bd7 8. Bd2 Bc5 9. b3 0-0-0 10. h3 Be7 11. b4 a6 12. Nb5 axb5 13. Bxb5 h5 0-1

[Event "Ocana op 1st"]
[Site "Ocana"]
[Date "2015.09.25"]
[Round "1"]
[White "Alvarez, Alfonso"]
[Black "Delgado, Alberto"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "1955"]
[BlackElo "1651"]
[PlyCount "102"]
[EventDate "2015.09.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nf6 3. e4 d6 4. d3 Nc6 5. Be3 Ng4 6. a3 g6 7. Bd2 Bg7 8. Be2 h5 9. h3 Nge5 10. Nf3 Nxf3+ 11. Bxf3 Nd4 12. Rb1 e6 13. Be2 Bd7 14. 0-0 a6 15. Be3 Qh4 16. Bf3 g5 17. Be2 g4 18. Bf4 gxh3 19. g3 Qe7 20. Bxh5 0-0-0 21. Kh2 Bc6 22. Bg4 f5 23. Be2 Bh6 24. Bxh6 Rxh6 25. Qc1 Rdh8 26. Bd1 Qf6 27. Qf4 e5 28. Qd2 fxe4 29. Qe3 exd3 30. Qxd3 Rf8 31. Bg4+ Kb8 32. Ne4 Nf3+ 33. Bxf3 Qxf3 34. Qxf3 Rxf3 35. Nc3 Rd3 36. Rbd1 Bg2 37. Rfe1 Rxd1 38. Rxd1 Rf6 39. Rd2 Ka7 40. Nd1 b5 41. cxb5 axb5 42. Ne3 Bc6 43. Kxh3 Ka6 44. b4 c4 45. g4 Be4 46. Kg3 c3 47. Ra2 d5 48. g5 Rf3+ 49. Kg4 d4 50. Nd1 c2 51. Rxc2 Rf4+ 0-1

[Event "Ocana op 1st"]
[Site "Ocana"]
[Date "2015.09.25"]
[Round "2"]
[White "Alvarez, Alfonso"]
[Black "Rivera, Luis Enrique"]
[Result "0-1"]
[ECO "A15"]
[WhiteElo "1955"]
[BlackElo "1600"]
[PlyCount "56"]
[EventDate "2015.09.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 Nf6 3. e4 d6 4. h3 g6 5. d3 Bg7 6. Be2 0-0 7. 0-0 a6 8. Be3 Re8 9. e5 dxe5 10. Qc1 Qc7 11. Bh6 Bh8 12. Qe3 Nbd7 13. Nbd2 b5 14. Rab1 Bb7 15. Rfe1 c5 16. Bd1 Nh5 17. g4 Ng7 18. Ne4 Ne6 19. a4 Nd4 20. b3 Rac8 21. h4 e6 22. Nfg5 Bg7 23. Bxg7 Kxg7 24. Ng3 b4 25. Rc1 Qc6 26. f3 f6 27. N5e4 f5 28. Nf2 f4 0-1

[Event "Medellin Flores op 22nd"]
[Site "Medellin"]
[Date "2015.08.09"]
[Round "9"]
[White "Moreno Correa, Luis Fernando"]
[Black "Alvarez, Alfonso"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2070"]
[BlackElo "1957"]
[PlyCount "25"]
[EventDate "2015.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 d6 2. d4 e6 3. c4 c6 4. Nf3 Ne7 5. Nc3 Ng6 6. Bd3 Be7 7. Be3 Nd7 8. 0-0 0-0 9. b4 Qc7 10. h3 a6 11. a4 b6 12. Ne2 Bb7 13. Qd2 1/2-1/2

[Event "Medellin Flores op 22nd"]
[Site "Medellin"]
[Date "2015.08.08"]
[Round "6"]
[White "Alvarez, Alfonso"]
[Black "Toro Castaneda, Elizabeth"]
[Result "1-0"]
[ECO "A27"]
[WhiteElo "1957"]
[BlackElo "1772"]
[PlyCount "83"]
[EventDate "2015.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Bc5 4. e4 d6 5. Na4 Bb6 6. Nxb6 axb6 7. d3 Nf6 8. Be2 0-0 9. 0-0 Nd7 10. Bd2 f5 11. Bg5 Qe8 12. exf5 Rxf5 13. Bc1 Qe7 14. Bd2 Rf8 15. Ng5 Nc5 16. Bc1 Nd4 17. Nf3 Nde6 18. Be3 Qf7 19. Ng5 Qe7 20. Nxe6 Qxe6 21. Bh5 Nd7 22. a3 Qe7 23. Qg4 Rf6 24. Qe4 Rf8 25. Rab1 Nc5 26. Qd5+ Qe6 27. Qxe6+ Nxe6 28. Bg4 Bd7 29. Rfd1 c5 30. Rd2 Rf7 31. f3 Raf8 32. b4 Ra8 33. Rb3 Raf8 34. h3 Nf4 35. Bxd7 Rxd7 36. Bxf4 Rxf4 37. bxc5 bxc5 38. Rb6 Kf7 39. Kf2 Ke6 40. Ke3 Rf8 41. Rdb2 Ra8 42. R2b3 1-0

[Event "Medellin Flores op 22nd"]
[Site "Medellin"]
[Date "2015.08.07"]
[Round "5"]
[White "Herrera, Milena"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2135"]
[BlackElo "1957"]
[PlyCount "53"]
[EventDate "2015.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. f4 Qh4+ 5. g3 Qe7 6. Bg2 g6 7. Nge2 a6 8. 0-0 Bg7 9. h3 h5 10. Be3 d6 11. Qd3 Nd7 12. a4 Nh6 13. Rae1 0-0 14. Kh2 c5 15. d5 exd5 16. Nxd5 Bxd5 17. Qxd5 Rae8 18. Qc4 Nf6 19. Nc3 a5 20. Bc1 Rd8 21. Qb5 Qc7 22. e5 dxe5 23. fxe5 Nd7 24. Nd5 Qb8 25. Ne7+ Kh7 26. Nc6 Qc7 27. Nxd8 1-0

[Event "Medellin Flores op 22nd"]
[Site "Medellin"]
[Date "2015.08.07"]
[Round "4"]
[White "Munoz, Farid"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2126"]
[BlackElo "1957"]
[PlyCount "51"]
[EventDate "2015.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e6 2. d4 c6 3. Nf3 Ne7 4. Bd3 Ng6 5. h4 d6 6. h5 Ne7 7. Nbd2 Nd7 8. Nc4 Ng8 9. e5 d5 10. Ne3 c5 11. c3 Ne7 12. Qa4 Nc6 13. Ng4 cxd4 14. cxd4 Bb4+ 15. Kf1 Qb6 16. h6 g6 17. Bg5 Be7 18. Bxe7 Kxe7 19. Bb5 a6 20. Qa3+ Ke8 21. Bxc6 bxc6 22. Rc1 Rb8 23. Qd6 Qxb2 24. Rxc6 Qb1+ 25. Ne1 Qb7 26. Rc7 1-0

[Event "Medellin Flores op 22nd"]
[Site "Medellin"]
[Date "2015.08.06"]
[Round "3"]
[White "Alvarez, Alfonso"]
[Black "Ruiz Agudelo, Santiago"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "1957"]
[BlackElo "1700"]
[PlyCount "36"]
[EventDate "2015.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. e4 Bb4 4. d3 d6 5. Bd2 0-0 6. h3 Nc6 7. Nf3 h6 8. a3 Bc5 9. Be2 Ne8 10. g4 Nf6 11. Qc2 Nh7 12. Rg1 b6 13. 0-0-0 Qf6 14. Rg2 Bd4 15. Rh1 Bxc3 16. Bxc3 Qf4+ 17. Qd2 g5 18. Qxf4 exf4 1-0

[Event "Medellin Flores op 22nd"]
[Site "Medellin"]
[Date "2015.08.06"]
[Round "2"]
[White "Castaneda, Jorge Luis"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2216"]
[BlackElo "1957"]
[PlyCount "59"]
[EventDate "2015.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nc3 c6 4. Nf3 d6 5. Be3 Nd7 6. Bc4 Nb6 7. Bb3 e6 8. Qd2 Qe7 9. 0-0-0 Bd7 10. h4 h5 11. a4 Nh6 12. Bg5 Qf8 13. Rhe1 f6 14. Bf4 0-0-0 15. a5 Na8 16. e5 fxe5 17. dxe5 d5 18. Bg5 Re8 19. Ne4 Nf5 20. Nf6 Re7 21. c4 Bh6 22. g3 Bxg5 23. Nxg5 Nc7 24. Kb1 Rg7 25. Rc1 Qe7 26. cxd5 exd5 27. a6 Nxa6 28. Nxd5 Qd8 29. Nf6 Kb8 30. Nf7 1-0

[Event "COL-ch Seniors"]
[Site "Bucaramanga"]
[Date "2013.09.29"]
[Round "7"]
[White "Martinez, Juan Cristobal"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "A42"]
[WhiteElo "1836"]
[BlackElo "1997"]
[PlyCount "30"]
[EventDate "2013.09.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 e5 5. dxe5 Bxe5 6. Nf3 Bg7 7. Be2 Be6 8. Ng5 Qc8 9. Nxe6 fxe6 10. 0-0 Nc6 11. Be3 Nge7 12. Bg4 0-0 13. f4 Kh8 14. c5 dxc5 15. Bxc5 Rd8 1-0

[Event "COL-ch Seniors"]
[Site "Bucaramanga"]
[Date "2013.09.28"]
[Round "5"]
[White "Alvarez, Alfonso"]
[Black "Arroyave, Jhon Jairo"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1997"]
[BlackElo "1888"]
[PlyCount "59"]
[EventDate "2013.09.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nf6 3. e4 Nc6 4. Nf3 d6 5. a3 Bg4 6. Be2 Bxf3 7. Bxf3 g6 8. 0-0 Bg7 9. d3 0-0 10. Bg5 h6 11. Be3 Nd7 12. Qd2 Kh7 13. Bd1 Nd4 14. f3 f5 15. Ne2 f4 16. Bf2 e5 17. Nc3 a6 18. Nd5 Qg5 19. Qa5 Rab8 20. Rb1 Ne6 21. Ba4 b5 22. cxb5 axb5 23. Bxb5 Ra8 24. Qd2 Nf6 25. Bc4 Qh5 26. h3 Ng5 27. Nc7 Nxf3+ 28. gxf3 Qxf3 29. Qd1 Qxh3 30. Be6 1-0

[Event "COL-ch Seniors"]
[Site "Bucaramanga"]
[Date "2013.09.28"]
[Round "6"]
[White "Alvarez, Alfonso"]
[Black "Velasquez, Joaquin"]
[Result "0-1"]
[ECO "A18"]
[WhiteElo "1997"]
[BlackElo "2150"]
[PlyCount "53"]
[EventDate "2013.09.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 d6 4. d4 Nbd7 5. Nf3 e5 6. d5 Be7 7. Bd3 c6 8. 0-0 a5 9. h3 0-0 10. Be3 Re8 11. Qa4 Qc7 12. Qb3 Nf8 13. Na4 c5 14. Nb6 Rb8 15. Bd2 Ng6 16. Nh2 Nh5 17. Qa4 Rf8 18. Bxa5 Nhf4 19. Rfd1 Bd8 20. Nxc8 Qxc8 21. Bxd8 Qxd8 22. Nf3 Qf6 23. Qd7 Ne7 24. a3 Neg6 25. Bf1 h6 26. b4 cxb4 27. axb4 0-1

[Event "COL-ch Seniors"]
[Site "Bucaramanga"]
[Date "2013.09.27"]
[Round "3"]
[White "Alvarez, Alfonso"]
[Black "Villamizar, Jose Luis"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "1997"]
[BlackElo "1576"]
[PlyCount "85"]
[EventDate "2013.09.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 c6 3. e4 Nf6 4. Nf3 d6 5. h3 h6 6. d4 exd4 7. Qxd4 c5 8. Qd1 Be7 9. Bd3 Nc6 10. a3 Ne5 11. Bb1 0-0 12. Nxe5 dxe5 13. 0-0 Qxd1 14. Rxd1 Be6 15. Nd5 Nxd5 16. exd5 Rad8 17. Re1 Bd7 18. Rxe5 Bf6 19. Re2 Rde8 20. Bd3 b6 21. Be3 Ba4 22. Rb1 Bb3 23. Rc1 a5 24. g4 Bg5 25. Bxg5 hxg5 26. Rxe8 Rxe8 27. Kf1 Kf8 28. Re1 Ba4 29. Rxe8+ Kxe8 30. Ke2 Ke7 31. Ke3 Bd7 32. f4 gxf4+ 33. Kxf4 g6 34. Be2 Kf6 35. h4 Ke7 36. g5 Kf8 37. Ke5 Ke7 38. d6+ Kf8 39. Kf6 Ba4 40. h5 gxh5 41. Bxh5 Be8 42. Bxf7 Bxf7 43. d7 1-0

[Event "COL-ch Seniors"]
[Site "Bucaramanga"]
[Date "2013.09.27"]
[Round "4"]
[White "Borja, Raul"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2130"]
[BlackElo "1997"]
[PlyCount "49"]
[EventDate "2013.09.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. Nc3 g6 2. e4 Bg7 3. d4 d6 4. Bg5 Nd7 5. Nf3 c6 6. Bc4 Nb6 7. Bb3 Qc7 8. a4 e6 9. Qd2 f6 10. Bf4 Qe7 11. 0-0-0 Bd7 12. a5 Nc8 13. e5 fxe5 14. dxe5 d5 15. h4 h6 16. Kb1 Bf8 17. Ne2 b6 18. Be3 Qf7 19. Nf4 Nge7 20. g4 Rg8 21. Qe2 c5 22. c3 Nc6 23. Nxd5 exd5 24. Bxd5 Qg7 25. e6 1-0

[Event "COL-ch Antioquia Profesionals"]
[Site "Antioquia"]
[Date "2012.??.??"]
[Round "7.4"]
[White "Garces Trujillo, Luis Javier"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "A50"]
[WhiteElo "2010"]
[BlackElo "1997"]
[PlyCount "24"]
[EventDate "2012.09.11"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 h6 3. Nc3 c6 4. e4 d6 5. Nf3 Bg4 6. Be2 Nbd7 7. Qc2 e5 8. 0-0 Be7 9. Nh4 0-0 10. f3 Bh5 11. Qb3 Nh7 12. Nf5 b6 0-1

[Event "Medellin Cuartas Memorial"]
[Site "Medellin"]
[Date "2011.08.07"]
[Round "8"]
[White "Villamil, Nahum Jose"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "C64"]
[WhiteElo "1839"]
[BlackElo "2035"]
[PlyCount "16"]
[EventDate "2011.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 Nd4 5. Nxd4 Bxd4 6. a4 Nf6 7. c3 Bb6 8. d3 Qe7 0-1

[Event "Medellin Cuartas Memorial"]
[Site "Medellin"]
[Date "2011.08.06"]
[Round "5"]
[White "Alvarez, Alfonso"]
[Black "Aristizabal Lopez, Jorge Alberto"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "2035"]
[BlackElo "1878"]
[PlyCount "36"]
[EventDate "2011.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. e4 Be7 4. Nf3 d6 5. Qc2 0-0 6. d4 exd4 7. Nxd4 c6 8. Bd3 h6 9. 0-0 b6 10. f4 Be6 11. Nce2 Nfd7 12. Bd2 Bf6 13. Bc3 Qc7 14. Nb3 Nc5 15. Nxc5 bxc5 16. b3 Qd8 17. Rad1 Bc8 18. Ng3 Nd7 1-0

[Event "Medellin Cuartas Memorial"]
[Site "Medellin"]
[Date "2011.08.06"]
[Round "6"]
[White "Aristizabal, Alejandro"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "C01"]
[BlackElo "2035"]
[PlyCount "57"]
[EventDate "2011.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 Ne7 3. c4 Ng6 4. Nc3 c6 5. Bd3 d6 6. Nge2 Nd7 7. f4 Nb6 8. 0-0 Ne7 9. f5 exf5 10. exf5 Ng8 11. Ng3 Nf6 12. Bg5 Be7 13. Qe2 Kd7 14. Kh1 Re8 15. Rfe1 h6 16. Bf4 Qc7 17. Nge4 Nxe4 18. Nxe4 Qd8 19. c5 Nd5 20. Bg3 Nf6 21. cxd6 Nxe4 22. Qxe4 Bf6 23. Qg4 Qb6 24. Qh5 Rf8 25. Be5 Qxb2 26. Bxf6 gxf6 27. Qxh6 Rg8 28. Bf1 Qxd4 29. Qh7 1-0

[Event "Medellin Cuartas Memorial"]
[Site "Medellin"]
[Date "2011.08.05"]
[Round "3"]
[White "Alvarez, Alfonso"]
[Black "Cardona, Gregorio"]
[Result "1/2-1/2"]
[ECO "D94"]
[WhiteElo "2035"]
[PlyCount "45"]
[EventDate "2011.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 d5 4. Nf3 Bg7 5. e3 0-0 6. h3 c6 7. Be2 Nbd7 8. cxd5 cxd5 9. 0-0 Nb6 10. Bd3 Be6 11. b3 Nc8 12. Bb2 Nd6 13. Rc1 Qa5 14. Qd2 Rac8 15. a3 Qb6 16. b4 Nc4 17. Bxc4 Rxc4 18. Ne5 Rcc8 19. Na4 Qb5 20. Nc5 Ne4 21. Nxe4 dxe4 22. Rc5 Rxc5 23. dxc5 1/2-1/2

[Event "Medellin Cuartas Memorial"]
[Site "Medellin"]
[Date "2011.08.05"]
[Round "4"]
[White "Ferreira Morales, Jorge Luis"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1800"]
[BlackElo "2035"]
[PlyCount "42"]
[EventDate "2011.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 Be7 4. d4 Nd7 5. dxe5 Nxe5 6. Nxe5 dxe5 7. Qh5 g6 8. Qxe5 Nf6 9. Bh6 Rg8 10. Bg5 Kf8 11. Nc3 Qd6 12. Qxd6 cxd6 13. Bh6+ Ke8 14. Nb5 Kd7 15. Bxf7 Rd8 16. 0-0 Nxe4 17. Rfe1 Bg5 18. Rxe4 Bxh6 19. Rh4 Bg5 20. Rxh7 Kc6 21. Nd4+ Kb6 1-0

[Event "Medellin Cuartas Memorial"]
[Site "Medellin"]
[Date "2011.08.04"]
[Round "2"]
[White "Ramirez, Benjamin Dario"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "C62"]
[WhiteElo "2213"]
[BlackElo "2035"]
[PlyCount "59"]
[EventDate "2011.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. Nxd4 Bd7 6. Bc4 Nxd4 7. Qxd4 Qf6 8. Qd3 Ne7 9. 0-0 Nc6 10. Nc3 Ne5 11. Qe2 Nxc4 12. Qxc4 Qd8 13. Bf4 Bc6 14. Rad1 Qf6 15. Bg3 Be7 16. b4 a6 17. a4 Qe6 18. Qd3 0-0 19. b5 axb5 20. axb5 Be8 21. Nd5 Bd8 22. Rfe1 Rc8 23. c4 h5 24. h4 Qg4 25. Ne3 Qg6 26. b6 Bc6 27. Nf5 Re8 28. bxc7 Bxc7 29. Bxd6 Bxd6 30. Qxd6 1-0

[Event "Medellin Cuartas Memorial"]
[Site "Medellin"]
[Date "2011.08.03"]
[Round "1"]
[White "Alvarez, Alfonso"]
[Black "Lont, Emanuel"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2035"]
[PlyCount "45"]
[EventDate "2011.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. a3 Nf6 4. e3 d6 5. Nf3 Be6 6. Be2 Be7 7. Qc2 0-0 8. Ng5 g6 9. Nxe6 fxe6 10. Bf3 Qd7 11. h4 Rad8 12. b4 Qe8 13. Bb2 Qf7 14. d3 d5 15. c5 d4 16. Ne4 dxe3 17. fxe3 b6 18. Ng5 Qe8 19. Nxe6 Qd7 20. Nxf8 Bxf8 21. cxb6 axb6 22. Bxc6 Qxc6 23. Qxc6 1-0

[Event "COL-ch Seniors"]
[Site "Medellin"]
[Date "2010.10.29"]
[Round "3.1"]
[White "Alvarez, Alfonso"]
[Black "Lopez, Jose Henry"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2049"]
[PlyCount "52"]
[EventDate "2010.10.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 e6 2. e4 c6 3. Nc3 b5 4. Nf3 Bb4 5. Bd2 Bxc3 6. Bxc3 a5 7. a3 Nf6 8. Bd3 0-0 9. Ne5 d5 10. f3 dxe4 11. fxe4 Bb7 12. Qe2 Nbd7 13. Nxd7 Qxd7 14. 0-0 b4 15. Bd2 Qxd4+ 16. Qe3 Qxe3+ 17. Bxe3 Rfd8 18. axb4 axb4 19. Bc5 Rxa1 20. Rxa1 Rc8 21. Ra7 Rb8 22. Bxb4 Nd7 23. Bd6 Nb6 24. e5 Rc8 25. Rxb7 Na8 26. b3 c5 1-0

[Event "COL-ch Seniors"]
[Site "Medellin"]
[Date "2010.10.29"]
[Round "7.1"]
[White "Alvarez, Alfonso"]
[Black "Pastrana, Julio Cesar"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2049"]
[PlyCount "33"]
[EventDate "2010.10.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 c5 3. e4 Nc6 4. Nf3 Be7 5. d3 h6 6. Be3 Nf6 7. h3 0-0 8. g4 Nh7 9. h4 f5 10. gxf5 exf5 11. Nd5 fxe4 12. dxe4 Nb4 13. Rg1 Nxd5 14. Qxd5+ Kh8 15. Ne5 Nf6 16. Nf7+ Rxf7 17. Qxf7 1-0

[Event "COL-ch Seniors"]
[Site "Medellin"]
[Date "2010.10.29"]
[Round "5.1"]
[White "Alvarez, Alfonso"]
[Black "Vallejo, Humberto"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "2049"]
[BlackElo "2006"]
[PlyCount "38"]
[EventDate "2010.10.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 c5 2. d5 Nf6 3. Nc3 g6 4. e4 d6 5. Nf3 Bg7 6. Bd2 0-0 7. Qc1 e5 8. dxe6 fxe6 9. Bh6 d5 10. Bxg7 Kxg7 11. exd5 exd5 12. Be2 d4 13. Nb1 Re8 14. Qd1 Qe7 15. Nbd2 Nc6 16. a3 Bf5 17. Nf1 Rad8 18. Ng3 Bxc2 19. Qxc2 d3 0-1

[Event "COL-ch Seniors"]
[Site "Medellin"]
[Date "2010.10.29"]
[Round "6.1"]
[White "Arias, Braulio"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "C01"]
[BlackElo "2049"]
[PlyCount "55"]
[EventDate "2010.10.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d6 3. Nc3 Bd7 4. Be3 Nf6 5. f3 Be7 6. Qd2 e5 7. Nge2 exd4 8. Nxd4 Nc6 9. 0-0-0 Ne5 10. Be2 a6 11. g4 b5 12. Nf5 Bxf5 13. gxf5 c6 14. Rhg1 g6 15. f4 Ned7 16. Bf3 gxf5 17. exf5 d5 18. Bd4 Qc7 19. Rde1 Kd8 20. Bxd5 cxd5 21. Bxf6 Bxf6 22. Nxd5 Qc6 23. Qa5+ Kc8 24. Ne7+ Bxe7 25. Rxe7 Ra7 26. Rxf7 Nc5 27. Rxa7 Nb3+ 28. axb3 1-0

[Event "COL-ch Seniors"]
[Site "Medellin"]
[Date "2010.10.29"]
[Round "1.1"]
[White "Caldera Sotomayor, Wilber"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "C41"]
[BlackElo "2049"]
[PlyCount "23"]
[EventDate "2010.10.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Be7 4. Nf3 d6 5. a3 0-0 6. d4 exd4 7. Nxd4 a6 8. Bd3 b5 9. Nf5 Bxf5 10. exf5 d5 11. Qf3 Nc6 12. Bf4 0-1

[Event "COL-ch Seniors"]
[Site "Medellin"]
[Date "2010.10.29"]
[Round "4.1"]
[White "Guarin, Holmes"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "B00"]
[BlackElo "2049"]
[PlyCount "82"]
[EventDate "2010.10.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 Ne7 3. d4 Ng6 4. e4 b6 5. Bd3 Bb7 6. 0-0 d6 7. Be3 Nd7 8. Qd2 Nf6 9. Re1 Be7 10. Nc3 Ng4 11. Rac1 Nh4 12. Nxh4 Bxh4 13. g3 Be7 14. a3 Nxe3 15. Qxe3 h5 16. h3 Bg5 17. f4 Be7 18. Ra1 0-0 19. Kg2 a6 20. a4 Qe8 21. b4 Bc6 22. Re2 Qd8 23. f5 Bg5 24. Qf2 e5 25. d5 Bb7 26. Rb2 Qb8 27. Qc2 Bc8 28. Qb3 Qb7 29. Qc2 Bd7 30. Qe2 Rfb8 31. a5 Qa7 32. b5 axb5 33. axb6 Qxb6 34. Rxa8 Rxa8 35. Nxb5 Qc5 36. Qc2 Ra7 37. Qb3 Bxb5 38. Qxb5 Qe3 39. Rb1 Ra8 40. Be2 Ra7 41. Bf3 Qd2+ 0-1

[Event "COL-ch Seniors"]
[Site "Medellin"]
[Date "2010.10.29"]
[Round "2.1"]
[White "Mesa, Francisco Sr"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "B07"]
[BlackElo "2049"]
[PlyCount "25"]
[EventDate "2010.10.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 Nf6 4. Bd3 d6 5. 0-0 0-0 6. Re1 Bg4 7. c3 Nbd7 8. Nbd2 Bxf3 9. Nxf3 e5 10. dxe5 Nxe5 11. Bg5 Qd7 12. a4 a5 13. b3 1-0

[Event "Medellin IRT op 17th"]
[Site "Medellin"]
[Date "2010.08.08"]
[Round "8"]
[White "Alvarez, Alfonso"]
[Black "Chirivi Castiblanco, Angie Lizeth"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "2113"]
[BlackElo "1976"]
[PlyCount "152"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 d6 5. h3 Be6 6. Ng5 Be7 7. Nxe6 fxe6 8. Bc4 Qd7 9. d3 0-0 10. 0-0 Rad8 11. Bb5 d5 12. Qe1 Qd6 13. Bxc6 bxc6 14. Qe2 d4 15. Na4 Qd7 16. b3 Bd6 17. Bg5 Rb8 18. Nb2 Qf7 19. Nc4 Nh5 20. g3 Qg6 21. Qg4 Rf7 22. Na5 Rb6 23. Nc4 Ra6 24. f3 c5 25. Rf2 Rc6 26. Raf1 Ra6 27. Kg2 Rc6 28. f4 exf4 29. gxf4 h6 30. e5 hxg5 31. exd6 cxd6 32. fxg5 Rxf2+ 33. Rxf2 Qe8 34. g6 Nf6 35. Qg5 e5 36. Re2 Ra6 37. h4 Qa8+ 38. Kh2 Qf3 39. Rg2 Qf4+ 40. Qxf4 exf4 41. a4 d5 42. Ne5 Re6 43. Ng4 Nh5 44. Nf2 Re2 45. Nh3 f3 46. Rf2 Rxf2+ 47. Nxf2 Kf8 48. Ng4 Ke7 49. Ne5 f2 50. Kg2 Kd6 51. Nf7+ Ke7 52. Kxf2 Nf4 53. Ne5 Kd6 54. Nf7+ Ke6 55. Nd8+ Kd7 56. Nb7 Kc6 57. Nd8+ Kc7 58. Kf3 Nxg6 59. Ne6+ Kd6 60. Nxg7 Nxh4+ 61. Kg4 Ng2 62. Nf5+ Ke5 63. Ne7 Ne3+ 64. Kf3 Nxc2 65. Nc6+ Kd6 66. Nxa7 Na1 67. Nb5+ Kc6 68. b4 cxb4 69. Nxd4+ Kb6 70. Kf4 b3 71. Nb5 Ka5 72. Nc3 d4 73. Nb1 Kxa4 74. Ke4 Nc2 75. Kd5 Kb4 76. Nd2 b2 0-1

[Event "Medellin IRT op 17th"]
[Site "Medellin"]
[Date "2010.08.08"]
[Round "9"]
[White "Carvajal Montoya, Juan Camilo"]
[Black "Alvarez, Alfonso"]
[Result "0-1"]
[ECO "C60"]
[WhiteElo "1932"]
[BlackElo "2113"]
[PlyCount "56"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. 0-0 a6 5. Ba4 b5 6. Bb3 Ng6 7. c3 Bb7 8. d4 d6 9. Ng5 Na5 10. Nxf7 Qh4 11. Nxh8 Nxh8 12. Nd2 Nxb3 13. Qxb3 Ng6 14. Qe6+ Be7 15. Qg8+ Kd7 16. Qxg7 Rf8 17. Nf3 Qxe4 18. Be3 Bd5 19. Rac1 Qf5 20. Ne1 Rg8 21. Qh6 a5 22. f3 Kc6 23. Bf2 Nf4 24. Bh4 Rg6 25. Qxh7 Rxg2+ 26. Nxg2 Nh3+ 27. Kh1 Qxh7 28. Bxe7 Qxe7 0-1

[Event "Medellin IRT op 17th"]
[Site "Medellin"]
[Date "2010.08.07"]
[Round "6"]
[White "Alvarez, Alfonso"]
[Black "Cordoba Rodriguez, Milton Dennis"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2113"]
[BlackElo "2001"]
[PlyCount "91"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 cxd4 6. cxd4 Qb6 7. Nc3 Bd7 8. a3 Nge7 9. Na4 Qc7 10. Bd3 Nf5 11. Bxf5 exf5 12. 0-0 Be7 13. Bg5 Bxg5 14. Nxg5 0-0 15. Nc3 Be6 16. b4 Qb6 17. Rc1 Qxd4 18. Qxd4 Nxd4 19. Rfd1 Nc6 20. Nxd5 Bxd5 21. Rxd5 Rfd8 22. Rdc5 Rab8 23. f4 h6 24. Nf3 a6 25. R1c3 Rd7 26. Kf2 Ne7 27. Kg3 Rd5 28. Rxd5 Nxd5 29. Rd3 Nb6 30. Rc3 Rd8 31. Kf2 Rd7 32. Ke2 Nd5 33. Rc4 Nb6 34. Rc3 Kf8 35. Nd2 Rd5 36. Nc4 Nd7 37. a4 b6 38. a5 b5 39. Nb2 Ke7 40. Ke3 Nb8 41. Nd3 Rd7 42. Nc5 Ra7 43. Nb3 Nd7 44. Rc6 f6 45. g3 g5 46. Nd4 1-0

[Event "Medellin IRT op 17th"]
[Site "Medellin"]
[Date "2010.08.07"]
[Round "7"]
[White "Avellaneda, Jonathan"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2014"]
[BlackElo "2113"]
[PlyCount "29"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d6 3. Nf3 Ne7 4. Nc3 Ng6 5. Bc4 Be7 6. Be3 a6 7. Qe2 Nd7 8. a4 c6 9. d5 e5 10. dxc6 bxc6 11. 0-0 Nf6 12. a5 0-0 13. Bb6 Qd7 14. Rfd1 Nf4 15. Qf1 1-0

[Event "Medellin IRT op 17th"]
[Site "Medellin"]
[Date "2010.08.06"]
[Round "4"]
[White "Alvarez, Alfonso"]
[Black "Vacca, Leonardo"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2113"]
[BlackElo "2040"]
[PlyCount "40"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 a6 3. Bc4 b5 4. Bxf7+ Kxf7 5. Qh5+ g6 6. Qd5+ e6 7. Qxa8 Qc7 8. Nd5 exd5 9. Qxd5+ Kg7 10. d3 Nf6 11. Qg5 h6 12. Qh4 g5 13. Qg3 Bd6 14. Qf3 Nc6 15. Be3 Be5 16. 0-0-0 d6 17. Qe2 Qa5 18. Kb1 Be6 19. a3 b4 20. Bd2 Bxb2 0-1

[Event "Medellin IRT op 17th"]
[Site "Medellin"]
[Date "2010.08.06"]
[Round "5"]
[White "Angulo, Pablo David"]
[Black "Alvarez, Alfonso"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2042"]
[BlackElo "2113"]
[PlyCount "73"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 h6 4. Nf3 Nc6 5. Bd2 Qe7 6. c3 Bd7 7. a4 b6 8. Na3 Qd8 9. Nc2 Na5 10. Ne3 c5 11. Bd3 Ne7 12. 0-0 a6 13. b4 Nac6 14. Qe2 cxb4 15. cxb4 Ng6 16. Bxg6 fxg6 17. Qd3 Kf7 18. Rfb1 Ne7 19. g3 Nf5 20. Ng2 Be7 21. Rb3 h5 22. h4 Qe8 23. Rba3 a5 24. Qb3 Qf8 25. Rb1 Kg8 26. Nf4 Qe8 27. Rc1 Kh7 28. Rc7 axb4 29. Bxb4 Bxb4 30. Qxb4 Rf8 31. Ng5+ Kh6 32. Qxb6 Nxh4 33. Ngxe6 Bxe6 34. Nxe6 Rxa4 35. Qc5 Nf3+ 36. Rxf3 Rxf3 37. Qc1+ 1-0

